Experimental launcher: Switcher buttons are larger and centered.

Experimental launcher: Switcher buttons are larger and centered.

Buttons are now 39x39, giving them bigger click/tap target zones,
spacing them further apart, and centering them within the switcher area.
The actual image sizes have not changed.

Moved the separator line up 1px to make room and to match the mocks.

Also added a new test of the exact dimensions of the app launcher, to
make sure we don't accidentally enlarge the window (which would have
been easy to accidentally do in this patch).

BUG=411775
Committed: https://crrev.com/2177f5fd17f39f4602d9cc39477cb3244bfaba62
Cr-Commit-Position: refs/heads/master@{#295934}

[Matt Giuca, 2014-09-18 05:11:41]

Patchset #3 (id:40001) has been deleted

[Matt Giuca, 2014-09-18 05:14:26]

Patchset #2 (id:20001) has been deleted

[Matt Giuca, 2014-09-18 05:21:18]

mgiuca@chromium.org changed reviewers:
+ calamity@chromium.org

[Matt Giuca, 2014-09-22 03:36:57]

PTAL.

[calamity, 2014-09-22 03:50:45]

lgtm

https://codereview.chromium.org/581923002/diff/100001/ui/app_list/views/app_l...
File ui/app_list/views/app_list_view_unittest.cc (right):

https://codereview.chromium.org/581923002/diff/100001/ui/app_list/views/app_l...
ui/app_list/views/app_list_view_unittest.cc:250: // NOTE: Height should exceed
402, because otherwise there might not be
'should not'?

[Matt Giuca, 2014-09-22 04:00:45]

https://codereview.chromium.org/581923002/diff/100001/ui/app_list/views/app_l...
File ui/app_list/views/app_list_view_unittest.cc (right):

https://codereview.chromium.org/581923002/diff/100001/ui/app_list/views/app_l...
ui/app_list/views/app_list_view_unittest.cc:250: // NOTE: Height should exceed
402, because otherwise there might not be
On 2014/09/22 03:50:45, calamity wrote:
> 'should not'?

Done.

[Matt Giuca, 2014-09-22 06:47:38]

The CQ bit was checked by mgiuca@chromium.org

[commit-bot: I haz the power, 2014-09-22 06:48:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/581923002/160001

[commit-bot: I haz the power, 2014-09-22 07:32:52]

Committed patchset #7 (id:160001) as a0033e6a013368488dac7e8bbeafbbebf9c689a8

[commit-bot: I haz the power, 2014-09-22 07:33:43]

Patchset 7 (id:??) landed as
https://crrev.com/2177f5fd17f39f4602d9cc39477cb3244bfaba62
Cr-Commit-Position: refs/heads/master@{#295934}